III. To evaluate local, regional, and distant recurrence rates. IV. To evaluate disease-free and overall survival rates. OUTLINE: Patients undergo external beam radiotherapy (3-dimensional conformal OR intensity-modulated) and 4-6 insertions of MRI-guided intracavitary brachytherapy over 8 weeks. Patients also receive cisplatin IV over 30-60 minutes for 5-6 weeks during radiotherapy.